$50 HUSNG -- Top Pair, Strange Spot

[Nichomacheo]

$50 HUSNG on PokerStars --

Opponent's numbers are 25/33/42 with a AF aggression of 2. Those numbers are limp/call/raise percentages from the small blind. My notes are "Aggressive, Weak, Overvbets Pots, Tricky". He has limped with kings, checked them down, checked all the way with top two pair, hence the weak comment. While he is aggressive preflop, he has been pretty weak/timid postflop. I've got a 2-1 lead without much work, simply playing tight, aggressive poker.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (2 handed) internettexasholdem.com

Hero (t1930)
BB (t1070)

Preflop: Hero is Button with J[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">Hero raises to t60</font>, BB calls t40.

Flop: (t120) 9[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t80</font>, <font color="#CC3333">BB raises to t160</font>, <font color="#CC3333">Hero ?</font>

Given my notes on him, what do you make of his min-raise here? Furthermore, what do you do? He has t850 behind.

Nichomacheo